Highly Sensitive, Durable, and Multifunctional Sensor Inspired by a Spider

ACS Applied Materials & Interfaces
Chengzhi LuoChunxu Pan

Abstract

Sensitivity, durability, and multifunction are the essential requirements for a high-performance wearable sensor. Here, we report a novel multifunctional sensor with high sensitivity and durability by using a buckled spider silk-like single-walled carbon nanotubes (SSL-SWNTs) film as the conducting network and a crack-shaped Au film as the sensitive transducer. Its high sensitivity is inspired by the crack-shaped structure of the spider's slit organs, while the high durability is inspired by the mechanical robustness of the spider silk. Similar to the spider's slit organs that can detect slight vibrations, our sensor also exhibits a high sensitivity especially to tiny strain. The proposed quantum tunneling model is consistent with experimental data. In addition, this sensor also responds sensitively to temperature with the sensitivity of 1.2%/°C. Because of the hierarchical structure like spider silk, this sensor possesses combined superiority of fast response (<60 ms) and high durability (>10 000 cycles). We also fabricate a wearable device for monitoring various human physiological signals. It is expect that this high-performance sensor will have wide potential applications in intelligent devices, fatigue detection, body moni...Continue Reading

References

Aug 19, 2008·Nano Letters·Jun ZhouZhong Lin Wang
Nov 27, 2009·Nature·Peter Fratzl, Friedrich G Barth
Mar 29, 2011·Nature Nanotechnology·Takeo YamadaKenji Hata
Oct 25, 2011·Nature Nanotechnology·Darren J LipomiZhenan Bao
Feb 27, 2013·Advanced Materials·Woon-Hong YeoJohn A Rogers
Jan 23, 2014·Proceedings of the National Academy of Sciences of the United States of America·Kuniharu TakeiAli Javey
Apr 18, 2014·Advanced Materials·Alex ChortosZhenan Bao
Jun 18, 2015·Microelectronic Engineering·Megan J CordillC Kirchlechner
Jan 26, 2016·Nature Nanotechnology·Sungwon LeeTakao Someya
Nov 2, 2016·ACS Applied Materials & Interfaces·Chengzhi LuoChunxu Pan

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Citations

May 11, 2021·Biosensors & Bioelectronics·Han-Wen ChengChuan-Jian Zhong
Dec 6, 2017·ACS Applied Materials & Interfaces·Dong Hae HoJeong Ho Cho

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